Arjen Robben has revealed he is still feeling the effects of groin surgery in October as he strives to rediscover his best form. Robben is set to feature for the Netherlands in their international friendly against England at Wembley on Wednesday night despite struggling for fitness and form with Bayern Munich. Even though he has been left out of the Bayern side in recent weeks, he played the full 90 minutes in yesterday\'s impressive 2-0 defeat of Schalke. And the former Real Madrid and Chelsea winger is hoping his rhythm will return with regular action. He said at Holland training today: \"I still have pain almost every day. This has been the worst injury of my career.\" Robben, 28, is hoping a run of games will enable him to regain top form, adding: \"The games I am getting are a good way of getting properly fit. With the help of adrenaline I am getting through but I can still not say I am 100 per cent fit. During training it often feels uncomfortable. I am heading in the right direction but I need games to get my rhythm.\"